Antislip device



L. W. GREIN.

ANTISLIP DEVICE.

APPLICATION man JAN.27. 192:.

Patented Mar. 7; 1922.

LEONARD "W. GBEIN, 0F CHENEY, WAS HINGTON.

ANTISLIP DEVICE.

Specification of Letters Patent.

PatentedMar. 7, 1922.

Application filed January 27, 1921. Serial No. 49:0,282.

To all who m, i2; may concern Be it known that l, Lnovnno l'V. Gnnrn,citizen of the United States, residing at Cheney, in Spokane County andState of Washington, have inventedcertain new and useful Improvements iniintislip Devices, of which the following is a specification.

My present invention relates to improvements in anti slipping devicesfor use in connection with the boot or shoe, and designed to be wornwhen walking on slippery or ice covered surfaces, snow, soft ground, orother surfaces where such device is required to facilitate walking. Theprimary object of the invention is the provision of a detachable,anti'slippiug device which is provided with friction surfaces or devicesunder both the ball and heel of the foot, which device is flexible andcomfortable, and enables the wearer to proceed with assurance andfacility without danger of the feet slipping either sidewise or to thefront or rear.

To this end the invention consists in certain novel combinations andarrangements of parts, in an anti-slipping device of the sandal type,WdlCll embody a chain. or link belt conforming to the outline of theshoe together with intermediate members in connection with the chain orlink belt, and in certain other novel features as will be hereinaftermore particularly pointed out and claimed. I

.ln the accompanying drawings l have illustrated one complete example ofthe physical embodiment of my invention wherein the parts are combinedand arranged ac cording to the best mode I have thus far dovised fer thepractical application of the principles of my invention.

Figure 1 is a side elevation of a shoe having attached thereto theanti-slipping device of my invention, ready for use.

Figure 2 is a bottom plan view of the device, detached from the shoe.

Figure 3 is a detail perspective view of an enlarged link member of thechain or link belt.

Figure 4 is a perspective view of one of the intermediate members orfriction devices.

In the preferred form of my invention I preferably utilize a continuouschain or link belt, designated as a whole by the numeral 1, which ismade up of links 2 and conforms to the outline of the shoe. The chainmay be made in different sizes to accommodate different sizes of shoesor boots, and the links are preferably stamped from sheet metal orsteel, in a suitable machine for the purpose;

The links 2 of the chain 1, each includes a flat horizontal andrectangular shaped. plate 8, and the body of the plate is punched toform a pair of spaced, longitudinally extending, integral and parallelflanges 4, and a complementary pair of transversely. extendingtriangular spurs 5, 5." When the device is applied to the shoe theseflanges l extend toward the front and rear where the links are locatedat the sides of the foot, and the spurs 5 extend laterally of the footor shoe, thus affording frictional contact with thesur face walked uponand support from slipping either laterally or to the. front and rear. Atthe toe and heel portions of the device the relative positions of theflanges and spurs are changed, as the continuous belt or chain extendsaround these portions, and

here the flanges and spins also are effective in insuring safety fromslipping.

The links of the Clldlll'ttI'G of sulliclent length to'insureflexibility in accord with the I v and the latter at Thus the tongue ofone outline or edge of the bottom of the shoe, as

indicated in Figures and 2.

Some of the links 2, at their-inner sides have lateral flanges 8extending from the base plate 3, and are'perforate'd as at 8" for theattachment or jointing of the intermediate frictional elements'clesignated'asl),10,

l1, and 12' The friction elements 9 and 10 are similar in construction,but vary in size and extend transversely of the shoe, the elements 9,shown as three in number being lo cated beneath the ball of the foot andthe elements 10, two of which are shown, being located beneath the heelof the foot.

In Figure 4 the construction of the elements or friction plates isexemplified, the plate being formed with longitudinally extending endtongues 13 to be joined to the eyes 8' of the lateral flanges 8 of thelinks of the chain, and each plate (9 or 10) is provided with a pair ofdownturned longitudinal flanges 14, and a pair of lateral flanges shown.

' beneath the ball of the foot, and the memberslO, in addition to theirfunction as fric tional tread' members, also brace and retain the heelportion of the chain;

The diagonally extending elementsll and 12 are located beneath theinstep of the foot or belowthe arch thereof and they join the front andrear portions of the anti-slipping device to maintain its propershape.The two angularly disposed members llrhave a common attachment to thefront transverse plate 10,and their diverging ends are joined atopposite points on the chain by tongues 18 pivotedin one of the eyes 8of the links. Theangularly disposed plates 12 beneath the arch of thefoot are preferably-made up, each of a pair of links, joined at 19 atopposite sides of the chain, and their converging ends pivoted at 20 tothe rear transverse plate 9 under the ball of the foot. Thus it will beapparent that a comparatively light,

but effective, flexible attachment is provided for the bottom of theshoe, of which the ball and heel portions are joined by intermediate,

, diagonally extendingbraces, the who-1e being adapted for frictionalcontact with the surface of the ice or ground, well braced bothlaterally and longitudinally, and capable of flexing freely to adaptitself'to the movement of the foot in walking.

The anti-slipping device isattached to or detached from the shoe. bymeans of straps, in the nature of a sandal, and for convenience Iutilize a pair of toe thongs-21, 21

which join the toe strap 22 with the chain at the point or toePOItlOIIOf the chain, and

a buckle 23 may be utilized to secure the device at thetoe of the shoe.An arch or instep strap 24: has, its ends 25 attached to the op- Thespaced,

1 ,aoaveo posite sides of the chain, and a buckle 26 is employed tosecure the device at this point. An ankle strap-27 with its buckle 28 isattached to a rear heel plate 29 and this [plate is pivotally jointed at30 to the extreme heel portion of the chain. The ankle strap encirclesthe foot about the ankle, and a pair of heel strapsBl, one at each sideof the heel extend from the ankle strap to the chain, where they areattached as at 32. Bythis arrangement of straps and buckles theanti-slipping device may be attached as a sandal to the shoe, beneaththe sole and heel thereof and provides a stable and comfortable supportwhich has frictional contact with the surface traveled over at amultiplicity of points and is flexible to bend or flex with the shoe inwalking, main ate contactjmembers connecting portions of said belt.

2. In an anti-slip device, a continuous belt comprising linkseach formedof a flat plate having a complementary end locking tongue andtongueopening, each said (plate having a pair of opposed flanges andapair of opposed spurs for contact with the ground, some of said plateshaving lateral perforated flanges, and intermediate members connectingsaid lateral flanges.

3. In an anti slip device, a continuous.

belt comprising links each formed of a flat plate having a complementaryend locking tongue and tongue-openingeach said plate having contactdevices at its under side, some of said plates having lateral perforatedflanges, and intermediate members having locking tongues connected to''said lateral flanges,

In testimony whereof I afin; my signature.

LEONARD W. GREIN.

